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7th Grade PSI
Structure and Function & Information Processing
2015-11-07 www.njctl.org
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· Cells: the Fundamental Units of Life
Click on the topic to go to that section
· Cell Structure and Function · Tissues, Organs, and Organ Systems · Information Processing in Living Systems
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SLIDE 2 Cells: The Fundamental Units of Life
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Slide 4 / 116 Characteristics of Living Things
There are more than 8.7 million different types of living things on Earth. Organisms come in different sizes, shapes, colors, but all living things have some key characteristics in common. Can you think of characteristics which ALL living things have in common? Make a list with your table.
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Grow
Respond to the environment. Plant grows toward light.
Reproduce
Use energy for growth and maintenance.
Characteristics of Living Things
These pictures give hints about what some of those traits are. Use the clues to come up with a list of 4 common characteristics. Move the pictures to see answers.
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SLIDE 3 An organism is an individual living thing that can function on its
Organisms Slide 7 / 116
Organisms have different levels of organization for structure and
- function. Humans are an example of a complex organism that has
many different levels of organization.
Levels of Organization
Cell Tissue Organ Organ System Organism
Slide 8 / 116 Cells
A cell is the basic unit of structure and function in all organisms. They are the building blocks of life. All organisms are made up of cells! Cells are microscopic, they cannot be seen with the naked eye.
Click here to watch an animation about cell size.
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SLIDE 4 A unicellular organism is made up of one cell. Multicellular organisms are made up of multiple cells.
Cells
Some types of plankton are
Starfish are made up of many cells.
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Unicellular organisms are relatively simple and small. They are the oldest forms of life on Earth, and they are everywhere! Examples of unicellular organisms include: bacteria, some types of fungi, and protists.
Unicellular Organisms
Bacteria on our bodies
- utnumber our human cells 10:1.
Electron microscope picture of bacteria in the human gut.
Bad bacteria, sometimes called germs, can make us sick, but most bacteria on our body is helpful.
Slide 11 / 116 Multicellular Organisms
Multicellular organisms are larger and more complex. In a multicellular organisms each cell has a specific job or function.
https://genographic.nationalgeographic.com/science-behind/genetics-overview/
Humans are made up of 200 different types of cells and over a trillion cells total!
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Cell Theory
· All living things are made up of one or more cells. · Cells are the basic unit of structure and function of all living things. · Cells arise only from other cells.
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Look at the following pictures and classify each item as a living thing or a nonliving thing.
Living vs. Nonliving
Use cell theory to justify your answer.
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1 Which sentence below is true about cells? A Plant and animal cells are living. B Plant and animal cells are non-living. C Only plant cells are living. D Only animal cells are living.
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SLIDE 6 1 Which sentence below is true about cells? A Plant and animal cells are living. B Plant and animal cells are non-living. C Only plant cells are living. D Only animal cells are living.
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Answer
A
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2 Which statement is true about cell theory? A Cell theory states that all cells are non-living. B Cell theory states that cells can come from non-living things. C Cell theory states that all cells arise from other cells. D Cell theory says animal cells are the only type of living cells.
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2 Which statement is true about cell theory? A Cell theory states that all cells are non-living. B Cell theory states that cells can come from non-living things. C Cell theory states that all cells arise from other cells. D Cell theory says animal cells are the only type of living cells.
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Answer
C
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SLIDE 7 3 How are cells like building blocks? A Cells are tough and cannot be broken. B Cells build on one another to form a structure. C All cells are weak and break apart. D Cells need to be stuck together in order for them to be strong.
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3 How are cells like building blocks? A Cells are tough and cannot be broken. B Cells build on one another to form a structure. C All cells are weak and break apart. D Cells need to be stuck together in order for them to be strong.
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Answer
B
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4 Which example below represents something that is living? A a leaf B an oven C a volcano D a bike
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SLIDE 8 4 Which example below represents something that is living? A a leaf B an oven C a volcano D a bike
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Answer
A
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Prokaryotic Cells
Scanning Electron Microscope image of bacteria.
Cell Classification
Eukaryotic Cell
Nucleus surrounded by a membrane (red structure)
Transmission Electron Micrograph image of an animal cell.
Cells can be classified as prokaryotic or eukaryotic . Eukaryotic cells have a nucleus surrounded by a membrane; prokaryotic cells do not have a membrane-bound nucleus.
Slide 19 / 116 What is a membrane?
A membrane is a thin, flexible substance that encloses something and acts as a
similar to bubbles.
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SLIDE 9 Prokaryotes
Prokaryotes are organisms made up of prokaryotic cells. Most prokaryotes are also unicelluar. Bacteria are prokaryotes. Prokaryotic cells are usually much smaller than eukaryotic cells and only have a few internal structures. Model of a prokaryotic cell
Slide 21 / 116 Eukaryotes
Eukaryotes are organisms made up of eukaryotic cells. All multicellular organisms and some unicellular organisms are eukaryotes. Eukaryotic cells are larger than prokaryotic cells and more
- complex. They contain a membrane-bound nucleus
and many internal structures called organelles .
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Nucleus
Other types of
Model of a eukaryotic cell Slide 23 / 116
SLIDE 10 5 Choose all the terms which describe this organism. A Eukaryotic B Prokaryotic C Unicellular D Multicellular
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5 Choose all the terms which describe this organism. A Eukaryotic B Prokaryotic C Unicellular D Multicellular
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Answer
A, D
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6 Choose all the terms which describe this organism. A Eukaryotic B Prokaryotic C Unicellular D Multicellular
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SLIDE 11 6 Choose all the terms which describe this organism. A Eukaryotic B Prokaryotic C Unicellular D Multicellular
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Answer
B, C
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7 Choose all the terms which describe this organism. A Eukaryotic B Prokaryotic C Unicellular D Multicellular
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7 Choose all the terms which describe this organism. A Eukaryotic B Prokaryotic C Unicellular D Multicellular
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Answer
B, C
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SLIDE 12 8 Choose all the terms which describe this organism. A Eukaryotic B Prokaryotic C Unicellular D Multicellular
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8 Choose all the terms which describe this organism. A Eukaryotic B Prokaryotic C Unicellular D Multicellular
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Answer
A, D
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9 A sunflower would be an example of a/an: A unicellular organism B multicellular organism C prokaryote D eukaryote E both B and D F both A and C
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SLIDE 13 9 A sunflower would be an example of a/an: A unicellular organism B multicellular organism C prokaryote D eukaryote E both B and D F both A and C
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Answer
E
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10 How many cells make up a unicellular organism? A zero B more than one C many D one
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10 How many cells make up a unicellular organism? A zero B more than one C many D one
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Answer
D
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SLIDE 14 11 What is the key difference between eukaryotic and prokaryotic cells? A Eukaryotic cells contain a membrane-bound nucleus B Prokaryotic cells contain a membrane-bound nucleus C Prokarytotic cells contain membranes D Eukarytotic are the only cells that grow
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11 What is the key difference between eukaryotic and prokaryotic cells? A Eukaryotic cells contain a membrane-bound nucleus B Prokaryotic cells contain a membrane-bound nucleus C Prokarytotic cells contain membranes D Eukarytotic are the only cells that grow
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Answer
A
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12 Water that appears clear can actually have many microscopic organisms in it. The image below shows an
- rganism found in pond water under a microscope. How
would you classify the organism? A Unicellular, eukaryote B Unicellular, prokaryote C Multicellular, eukaryote D Multicellular, prokaryote
Click here to view a protist under a microscope.
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SLIDE 15 12 Water that appears clear can actually have many microscopic organisms in it. The image below shows an
- rganism found in pond water under a microscope. How
would you classify the organism? A Unicellular, eukaryote B Unicellular, prokaryote C Multicellular, eukaryote D Multicellular, prokaryote
Click here to view a protist under a microscope.
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Answer
A This one is tricky. C and D are definitely not right because it's a unicellular organism. This is a paramecium, a protist that has a nucleus.
Slide 31 (Answer) / 116 Lab 1 Investigating Cells Part 1 & 2 Slide 32 / 116
Cell Structure and Function
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SLIDE 16 Cell Structure and Function
Like all living things, cells require energy, grow, reproduce, and respond and adapt to their environment.
Atoms Molecules Organelles Cells
Even though they are the fundamental unit of life, cells are composed of many smaller parts that work together to make them function.
Slide 34 / 116 Organelles
Organelles are specialized cell structures that carry out specific cell functions. Organelles are built out of molecules.
Click here to see how cells compare in size to organelles and molecules.
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13 Which of the following ranks cells, molecules, organelles, and atoms in order of size and complexity from smallest/ least to largest/greatest? A organelles, molecules, cells, atoms B cells, atoms, molecules, organelles C organelles, cells, atoms, molecules D atoms, molecules, organelles, cells
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SLIDE 17 13 Which of the following ranks cells, molecules, organelles, and atoms in order of size and complexity from smallest/ least to largest/greatest? A organelles, molecules, cells, atoms B cells, atoms, molecules, organelles C organelles, cells, atoms, molecules D atoms, molecules, organelles, cells
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Answer
D
Slide 36 (Answer) / 116 Common Cell Features
Most cells - prokaryotic and eukaryotic - have a few parts in common: · Plasma membrane : thin membrane that encloses cells and regulates what materials can enter and exit the cell. · Cytoplasm or Cytosol : gel-like solution that fills up the cell; all of the organelles are contained within the cytoplasm. · Ribosomes : assemble cellular machines called proteins · DNA: a molecule that directs cell activities and gives organisms their specific traits
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Plasma Membrane
Cytoplasm Ribosomes DNA
Common Cell Features Slide 38 / 116
SLIDE 18 Animal Cell Structures Slide 39 / 116 Animal Cell Structure: Cell Membrane
Cell membrane encloses cell and regulates what enters and exits the cell. Cell Membrane
Slide 40 / 116 Cell Membranes
A cell membrane is a thin, flexible structure that holds liquids and other contents in place. You can picture it being like a thin plastic bag. Cell membranes are made up of smaller molecules that stick
- together. They keep the cell contents from leaking out, and
control what substances can enter and exit the cell .
Cell membrane model
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SLIDE 19 Cytoplasm is a jelly-like solution filling the inside of a cell that holds
Animal Cell Structure: Cytoplasm
Cytoplasm is clear substance
Click here to see a video of cytoplasmic streaming.
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The nucleus controls the cell because it contains the cell's DNA, the chemical instructions for life.
Animal Cell Structure: Nucleus Slide 43 / 116
The ribosomes assemble proteins, which are the molecular machines of the cell.
Animal Cell Structures: Ribosomes
Protein Molecule
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SLIDE 20 14 Which of the following statements is correct? A The nucleus surrounds the cell. B The cytoplasm surrounds the outside the cell. C The nuclear envelope monitors what goes in and
D The nucleus controls all functions of a cell.
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14 Which of the following statements is correct? A The nucleus surrounds the cell. B The cytoplasm surrounds the outside the cell. C The nuclear envelope monitors what goes in and
D The nucleus controls all functions of a cell.
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Answer
D
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15 What structure is like the gate-keeper of the cell, allowing certain substances to enter and exit? A cell membrane B the nuclear envelope C microfilaments D DNA
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SLIDE 21 15 What structure is like the gate-keeper of the cell, allowing certain substances to enter and exit? A cell membrane B the nuclear envelope C microfilaments D DNA
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Answer
A
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16 What is the primary function of a ribosome? A to clean the cell B to make RNA C to make protein D to make DNA
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16 What is the primary function of a ribosome? A to clean the cell B to make RNA C to make protein D to make DNA
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Answer
C
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The Golgi Apparatus packages and ships proteins out of the cell.
Animal Cell Structure: Golgi Apparatus Slide 48 / 116
The ER is the transport network for proteins and other materials.
Animal Cell Structure: Endoplasmic Reticulum Slide 49 / 116
Lysosomes are filled with enzymes that breakdown and recycle materials
Animal Cell Structures: Lysosomes Slide 50 / 116
SLIDE 23 Mitochondria are the sites of chemical reactions that power the cell.
Animal Cell Structures: Mitochondria Slide 51 / 116
17 The cell structure that contains enzymes and breaks apart waste molecules is called the ___________. A lysosome B vacuole C nucleus D endoplasmic reticulum
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17 The cell structure that contains enzymes and breaks apart waste molecules is called the ___________. A lysosome B vacuole C nucleus D endoplasmic reticulum
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Answer
A
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SLIDE 24 18 What cell structure packages and ships proteins? A B Golgi apparatus C Mitochondria D ER Lysosomes
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18 What cell structure packages and ships proteins? A B Golgi apparatus C Mitochondria D ER Lysosomes
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Answer
B
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19 What organelle is like the powerhouse of the cell? A B Golgi apparatus C Mitochondria D ER Lysosomes
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SLIDE 25 19 What organelle is like the powerhouse of the cell? A B Golgi apparatus C Mitochondria D ER Lysosomes
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Answer
C
Slide 54 (Answer) / 116 Plant Cell Structures
Animal cells have structures plant cells don't have including centrioles, microfilaments, and microtubules. Plant and animal cells have many common features, and a few key differences. Unique Plant Cell Structures
Slide 55 / 116 Plant Cell Structures: Large Vacuoles
Vacuoles store water to help maintain water pressure inside cell. *Small vacuoles are also found in animal cells and protists.
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SLIDE 26 Plant Cell Structures: Cell Wall
The cell wall protects and supports the cell;
small molecules like
dioxide through.
Slide 57 / 116 Plant Cell Structures: Chloroplasts
Chloroplasts
directly from sunlight and use it to make energy molecules/food.
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20 What is one key difference between a plant and animal cell? A Plant cells have a cell wall as animal cells do not. B Plant and animal cells both have ribosomes. C Animal cells have ribosomes and plant cells do not. D Plant cells do not have a nucleus.
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SLIDE 27 20 What is one key difference between a plant and animal cell? A Plant cells have a cell wall as animal cells do not. B Plant and animal cells both have ribosomes. C Animal cells have ribosomes and plant cells do not. D Plant cells do not have a nucleus.
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Answer
A
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21 What type of cell has choroplasts? A small B non-living C plant D animal
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21 What type of cell has choroplasts? A small B non-living C plant D animal
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Answer
C
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SLIDE 28 22 What types of cells have a nucleus? A only non-living cells B both plant and animal cells C only the smallest cells D human cells
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22 What types of cells have a nucleus? A only non-living cells B both plant and animal cells C only the smallest cells D human cells
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Answer
B
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23 What is the function of a chloroplast? A produce energy for cells B control the functions of a cell C assemble proteins D capture energy from the sun to make food
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SLIDE 29 23 What is the function of a chloroplast? A produce energy for cells B control the functions of a cell C assemble proteins D capture energy from the sun to make food
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Answer
D
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24 Which type of cell barrier do all cells have? A cell wall B cell membrane C nuclear membrane D nuclear pore
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24 Which type of cell barrier do all cells have? A cell wall B cell membrane C nuclear membrane D nuclear pore
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Answer
B
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SLIDE 30 Lab 1 Investigating Cells Parts 3-5 Slide 64 / 116
Project: Build your Cell Field or City!
INQUIRE: How does a cell compare to a baseball stadium or city?
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Tissues, Organs, and Organ Systems
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SLIDE 31
Cells in multicellular organisms are specialized, having different shapes, sizes and functions. Skin cells Fat cells Brain cells (neurons) Blood cells
Multicellular Organisms Slide 67 / 116
Cells have special ways of communicating with each other to help make multicellular organisms function. For example, when you get a cut in your skin, your cells react by sending chemical messengers out to tell your other cells your skin needs repairing.
Cell Communication Slide 68 / 116
Immune cells are some of the coolest cells in our bodies. They respond to injuries to help repair or get rid of bad bacteria.
Cell Communication Slide 69 / 116
SLIDE 32 When you get a cut, why does an adult always make you wash it first thing? Bad bacterial cells can get through the tear in skin and get in your body. Fortunately, your immune cells are on this. When they get a signal that there's been an accident, they quickly arrive on the scene to help clean up bacteria. Blood vessel filled with blood cells
Cell Communication Slide 70 / 116
25 What is one way cells communicate with each
A send emails B cells cannot communicate C send chemical signals D send radio signals
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25 What is one way cells communicate with each
A send emails B cells cannot communicate C send chemical signals D send radio signals
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Answer
C
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Tissues
Tissues are groups of cells that have a similar shape and function. 4 types of human tissue Plant tissue
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Connective tissue serves a "connecting" function. It supports and binds other tissues. Connective tissue serves many other purposes in the body, including storing fats and forming blood cells.
Connective Tissue Slide 73 / 116
Nervous tissue is the main component of the nervous system – the brain, spinal cord, and branching peripheral nerves – which regulates and controls bodily functions.
Nervous Tissue Slide 74 / 116
SLIDE 34 Epithelial tissue covers external surfaces and internal cavities and
- rgans. Glands are also composed of epithelial tissue. Epithelial
tissue helps to protect organisms from microorganisms, injury, and fluid loss.
Epithelial Tissue
squamous epithelial cells parotid epithelial cells esophageal epithelial cells
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Muscle tissue is used for locomotion, food movement in the gut, and heat production.
Muscle Tissue
Types of Muscle Tissue:
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26 What is the primary function of connective tissue? A to support external structures B to support muscles C to connect neurons in the brain D to support and bind other tissue
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SLIDE 35 26 What is the primary function of connective tissue? A to support external structures B to support muscles C to connect neurons in the brain D to support and bind other tissue
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D
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27 Which tissue type has 3 basic forms that give rise to smooth, skeletal, and cardiac? A connective B epithelial C muscle D nervous
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27 Which tissue type has 3 basic forms that give rise to smooth, skeletal, and cardiac? A connective B epithelial C muscle D nervous
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Answer
C
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SLIDE 36 28 Which tissue covers external surfaces? A nervous B connective C epithelial D muscle
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28 Which tissue covers external surfaces? A nervous B connective C epithelial D muscle
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Answer
C
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An organ is a structure that contains at least two different types of tissue functioning together for a common purpose.
Skin Heart Ear
Build an Organ Activity Slide 80 / 116
SLIDE 37 Lab 2 Dissecting a Chicken Wing Slide 81 / 116
A group of organs come together to function as a system.
Organ Systems Slide 82 / 116
The digestive system breaks down food into usable nutrients and expels the wastes.
Digestive System
Click here for a short video on the digestive system.
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SLIDE 38 The circulatory system carries oxygen and nutrients to every cell in the body. It includes the heart, the veins, the arteries, capillaries and blood.
Circulatory System
Click here for a short video on the circulatory system.
Slide 84 / 116 Skeletal System
The skeletal system is in charge of providing support for the body. Its joints allow for movement. The skeletal system also produces all the red blood cells for the body, and protects all the major organs.
Click here for a short video on the skeletal system.
Slide 85 / 116 Muscular System
The muscular system is an organ system consisting of skeletal, smooth and cardiac muscles. It handles the movement of the body, maintains posture, and circulates blood throughout the body.
Click here for a short video on the muscular system.
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SLIDE 39 Respiratory System
The respiratory system brings in oxygen to be carried by the red blood cells. It also gets rid of all waste gases from the body.
Click here for a short video on the respiratory system.
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29 Which organ system breaks down food? A digestive B skeletal C respiratory D muscular
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29 Which organ system breaks down food? A digestive B skeletal C respiratory D muscular
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Answer
A
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SLIDE 40 30 Without this system, your body would have no shape: A muscular B respiratory C digestive D skeletal
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30 Without this system, your body would have no shape: A muscular B respiratory C digestive D skeletal
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D
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31 This system brings in oxygen carried by red blood cells: A skeletal B respiratory C muscular D digestive
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SLIDE 41 31 This system brings in oxygen carried by red blood cells: A skeletal B respiratory C muscular D digestive
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Answer
B
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Structure of Life
Cells
combine to create
Tissues
that form
that work together in
Organ systems
that make up
Organisms Organs Slide 91 / 116 Organ Systems Activity Parts I and II Slide 92 / 116
SLIDE 42 Information Processing in Living Systems
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Slide 93 / 116 Information Processing
Organisms have multiple levels of structure and organization. In multicellular organisms, the body is a system of multiple interacting subsystems. How do all of these systems communicate with one another to function as a whole and respond to their environment? In animals, sensory receptors respond to stimuli by sending messages to the brain for immediate behavior or storage as memories.
Slide 94 / 116 Information Processing
In humans a network of cells called neurons transmit information in the form of electrical signals. Neurons are the cells that make up the nervous system. The brain has billions of neurons that connect with thousands of other cells.
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SLIDE 43 Information Processing
The nervous system has two major components: Central Nervous System (CNS) is made up of the brain and spinal cord and serves as the main processing center for information Peripheral Nervous System connects the CNS to limbs and organs.
Click here for a short video on the nervous system.
Slide 96 / 116 Sensory Stimuli
There are three main forms of sensory stimulation that activate sensory systems in multicellular organisms: mechanical, chemical, and electromagnetic. These 3 types of sensory stimulation happen in all of our bodies - sometimes at the same time!
Slide 97 / 116 Mechanical Stimuli
Examples of mechanical stimuli include: Vibrations Physical Pressure
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SLIDE 44
Chemical Stimuli
Examples of chemical stimuli include: Food chemicals Oderants & Pheromones
Slide 99 / 116 Electromagnetic Stimuli
Examples of electromagnetic stimuli include: Light Heat
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32 In animals, which system is responsible for processing information from the environment: A skeletal B nervous C muscular D digestive
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SLIDE 45 32 In animals, which system is responsible for processing information from the environment: A skeletal B nervous C muscular D digestive
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Answer
B
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33 Light sensitive neurons in the eye response to which type of sensory stimuli: A mechanical B electromagnetic C chemical D physical
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33 Light sensitive neurons in the eye response to which type of sensory stimuli: A mechanical B electromagnetic C chemical D physical
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B
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SLIDE 46 34 Hair cells in the ear respond to which type of sensory stimuli: A mechanical B electromagnetic C chemical D physical
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34 Hair cells in the ear respond to which type of sensory stimuli: A mechanical B electromagnetic C chemical D physical
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A
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35 Plants release pheromones that bees are attracted to so that bees will pollinate them. Pheromones are an example of which type of sensory stimuli? A mechanical B electromagnetic C chemical D physical
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SLIDE 47 35 Plants release pheromones that bees are attracted to so that bees will pollinate them. Pheromones are an example of which type of sensory stimuli? A mechanical B electromagnetic C chemical D physical
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Answer
C
Slide 104 (Answer) / 116 Sensory Modalities, Memory, and Behavior
Human sensory modalities together gather sensory information about stimuli that results in immediate behavior reaction and short-term sensory memory storage. There are at least five main organs that sense information from the environment. Can you name these five organs? These organs contain different sensory receptors.
Slide 105 / 116 Sensory Modalities, Memory, and Behavior
Human sensory modalities together gather sensory information about stimuli that results in immediate behavior reaction and short-term sensory memory storage. There are at least five main organs that sense information from the environment. Can you name these five organs? These organs contain different sensory receptors.
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Answer
Eyes, ears, tongue, skin and nose
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SLIDE 48 Sensory Receptors
A sensory receptor is a nerve cell or bundle of nerve cells that interact with stimuli and send signals to the brain for
- processing. They are all found all over the body and protect us
from harm.
Slide 106 / 116 Sensory Receptors
Humans have many sensor receptors that contribute to a multitude of senses. There are five main sensory receptors that allow humans to sense different things. Temperature receptors- gives animals the ability to sense heat and cold Pain receptors- detect and respond to internal or external pain
Slide 107 / 116 Sensory Receptors
Chemoreceptors- associated with the sense of taste and smell. Mechanoreceptors - are associated with the ability to sense touch, pressure, sound and balance.
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SLIDE 49
Sensory Receptors
Photoreceptors - are sensitive to light and allow animals to see In addition to these five main sensory receptors, there are many more that contribute to many more senses!
Slide 109 / 116 Sensory Receptors
Other sensory receptors include: · Hunger Receptors-allows a person to sense when the body needs food · Stretch Receptors- sense the dilation of blood vessels and are found in the lungs, bladder and stomach · Magnetoreceptors- sense and respond to magnetic fields · Electroreceptors- sense and respond to electric fields · Hydroreceptors- associated with the ability to sense changes in humidity · Position Receptors- allow humans to sense where body parts are in relation to other body parts
Slide 110 / 116 Nervous System Functions
Sensory input : Recieve signals from sensory receptors Integration : Interpret the sensory signals and form appropriate responses Motor output : Conduct signals from the integration centers to effector organs, which can be muscles or glands, to carry out the body's response.
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SLIDE 50
Nervous System Functions
Discuss the sensory input, motor output below. What type of stimulus might have elicited this response?
Slide 112 / 116 Lab 3 Can You Trust Your Senses? Slide 113 / 116 Reflexes
A reflex is a response to a stimulus that bypasses the brain. The input signal travels a short distance to the spinal cord and the body automatically responds back. Since the input signal doesn't have to travel all the way to the brain, the reaction is almost instantaneous.
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SLIDE 51 36 You place your hand over a hot stove for a brief second, which of the following represents a normal nervous system response? pain receptor input spinal cord motor output remove hand A chemoreceptor input spinal cord motor output remove hand B touch receptor input integration motor output grip burner C pain receptor input integration motor output grip burner D
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36 You place your hand over a hot stove for a brief second, which of the following represents a normal nervous system response? pain receptor input spinal cord motor output remove hand A chemoreceptor input spinal cord motor output remove hand B touch receptor input integration motor output grip burner C pain receptor input integration motor output grip burner D
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Answer
A
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37 Which of the following is an example of a reaction to a stimulus involving brain processing? Jumping when someone comes up behind you and startles you A B C D Catching a hockey puck flying at your face The pupil of your eye getting smaller in bright light Removing your hand from a hot stove
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SLIDE 52 37 Which of the following is an example of a reaction to a stimulus involving brain processing? Jumping when someone comes up behind you and startles you A B C D Catching a hockey puck flying at your face The pupil of your eye getting smaller in bright light Removing your hand from a hot stove
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Answer
B
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